Tungsten Filament bending and production!! my machine produces filaments for a UV lightbulb, the filaments are basically tungsten coiled tightly around a tungsten shank, and the machine used to do this perfectly! however it was switched off for a about a year during development. but now when it comes to engage the wire to coil up around the shank it more often than not splits the end of the tungsten wire and does not catch and wind up, can anyone think of any factors that may contribute to this happening? i think the wire used may be different, but have no idea what was used previously, and the programming seems sound (as it used to work) ive also used heat to make the tungsten more ductile as it is wound, this seems to help but it not enough. can pure tungsten have very differing properties that could make a machine work with one reel and not with another? any help would be very much appreciated!